added Dockerfile

Author: nshntarora

Dockerfile

@@ -0,0 +1,33 @@
+# Stage 1: Build the Go application
+FROM golang:1.22 as builder
+
+# Set the Current Working Directory inside the container
+WORKDIR /app
+
+# Copy go mod and sum files
+COPY go.mod go.sum ./
+
+# Download all dependencies. Dependencies will be cached if the go.mod and go.sum files are not changed
+RUN go mod download
+
+# Copy the source code into the container
+COPY . .
+
+# Build the Go app
+RUN go build -o main .
+
+# Stage 2: Run the Go application
+FROM golang:1.22
+
+# Set the Current Working Directory inside the container
+WORKDIR /app
+
+# Copy the binary and config file from the builder stage
+COPY --from=builder /app/config.toml .
+COPY --from=builder /app/main .
+
+# Expose port 9090 to the outside world
+EXPOSE 9090
+
+# Command to run the executable
+CMD ["./main"]

config/config.go

@@ -46,6 +46,30 @@ func NewConfig() *Config {
 	// then override the configuration from environment variables
 	OverrideConfigFromEnv(&cfg)
 
+	if cfg.Origin == "" {
+		log.Print("origin url is required, you can configure it in the config.toml file or pass it as an environment variable ORBIT_ORIGIN=http://localhost:8080/graphql")
+		os.Exit(1)
+	}
+
+	if cfg.CacheBackend == "" {
+		cfg.CacheBackend = "in_memory"
+	}
+
+	if cfg.CacheBackend == "redis" {
+		if cfg.RedisHost == "" {
+			log.Print("redis host is required when using redis cache backend")
+			os.Exit(1)
+		}
+		if cfg.RedisPort == 0 {
+			log.Print("redis port is required when using redis cache backend")
+			os.Exit(1)
+		}
+	}
+
+	if cfg.Port == 0 {
+		cfg.Port = 9090
+	}
+
 	if cfg.HandlersGraphQLPath == "" {
 		cfg.HandlersGraphQLPath = "/graphql"
 	}

main.go

@@ -23,7 +23,8 @@ func main() {
 	fmt.Println("🛠️ initializing configuration...")
 	cfg := config.NewConfig()
 	fmt.Println("🛠️ configuration initalized")
-	fmt.Println("⚙️ configuration: ", "cache_backend=", cfg.CacheBackend, "cache_header_name=", cfg.CacheHeaderName, "origin=", cfg.Origin, "port=", cfg.Port, "scope_headers=", cfg.ScopeHeaders, "primary_key_field=", cfg.PrimaryKeyField, "log_level=", cfg.LogLevel, "log_format=", cfg.LogFormat, "redis_host=", cfg.RedisHost, "redis_port=", cfg.RedisPort, "cache_ttl=", cfg.CacheTTL, "handlers_graphql_path=", cfg.HandlersGraphQLPath, "handlers_flush_all_path=", cfg.HandlersFlushAllPath, "handlers_flush_by_type_path=", cfg.HandlersFlushByTypePath, "handlers_debug_path=", cfg.HandlersDebugPath, "handlers_health_path=", cfg.HandlersHealthPath)
+	fmt.Println("⚙️ configuration: ")
+	fmt.Print("→ cache_backend=", cfg.CacheBackend, "\n→ cache_header_name=", cfg.CacheHeaderName, "\n→ origin=", cfg.Origin, "\n→ port=", cfg.Port, "\n→ scope_headers=", cfg.ScopeHeaders, "\n→ primary_key_field=", cfg.PrimaryKeyField, "\n→ log_level=", cfg.LogLevel, "\n→ log_format=", cfg.LogFormat, "\n→ redis_host=", cfg.RedisHost, "\n→ redis_port=", cfg.RedisPort, "\n→ cache_ttl=", cfg.CacheTTL, "\n→ handlers_graphql_path=", cfg.HandlersGraphQLPath, "\n→ handlers_flush_all_path=", cfg.HandlersFlushAllPath, "\n→ handlers_flush_by_type_path=", cfg.HandlersFlushByTypePath, "\n→ handlers_debug_path=", cfg.HandlersDebugPath, "\n→ handlers_health_path=", cfg.HandlersHealthPath, "\n\n")
 
 	logger.Configure(&logger.Config{
 		Format: string(cfg.LogFormat),